Require stdint.h and inttypes.h

We've been silently requiring stdint.h for a while now, and nobody
has complained.  Closes ticket 26626.

changes/ticket26626

+  o Code simplification and refactoring:
+    - Tor now assumes that you have standards-conformant stdint.h and
+      inttypes.h headers when compiling.  Closes ticket 26626.

configure.ac

@@ -1393,7 +1393,6 @@ AC_CHECK_HEADERS([errno.h \
                   netinet/in6.h \
                   pwd.h \
                   readpassphrase.h \
-                  stdint.h \
                   stdatomic.h \
                   sys/eventfd.h \
                   sys/file.h \
@@ -1517,22 +1516,6 @@ AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
 #include <sys/time.h>
 #endif])
 
-dnl In case we aren't given a working stdint.h, we'll need to grow our own.
-dnl Watch out.
-
-AC_CHECK_SIZEOF(int8_t)
-AC_CHECK_SIZEOF(int16_t)
-AC_CHECK_SIZEOF(int32_t)
-AC_CHECK_SIZEOF(int64_t)
-AC_CHECK_SIZEOF(uint8_t)
-AC_CHECK_SIZEOF(uint16_t)
-AC_CHECK_SIZEOF(uint32_t)
-AC_CHECK_SIZEOF(uint64_t)
-AC_CHECK_SIZEOF(intptr_t)
-AC_CHECK_SIZEOF(uintptr_t)
-
-dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
-
 AC_CHECK_SIZEOF(char)
 AC_CHECK_SIZEOF(short)
 AC_CHECK_SIZEOF(int)

src/lib/cc/compat_compiler.h

@@ -7,6 +7,7 @@
 #define TOR_COMPAT_COMPILER_H
 
 #include "orconfig.h"
+#include <inttypes.h>
 
 #if defined(__has_feature)
 #  if __has_feature(address_sanitizer)
@@ -183,53 +184,19 @@
 #define OP_EQ ==
 #define OP_NE !=
 
-#ifdef _MSC_VER
-/** Casts the uint64_t value in <b>a</b> to the right type for an argument
- * to printf. */
-#define U64_PRINTF_ARG(a) (a)
-/** Casts the uint64_t* value in <b>a</b> to the right type for an argument
- * to scanf. */
-#define U64_SCANF_ARG(a) (a)
-/** Expands to a literal uint64_t-typed constant for the value <b>n</b>. */
-#define U64_LITERAL(n) (n ## ui64)
-#define I64_PRINTF_ARG(a) (a)
-#define I64_SCANF_ARG(a) (a)
-#define I64_LITERAL(n) (n ## i64)
-#else /* !(defined(_MSC_VER)) */
-#define U64_PRINTF_ARG(a) ((long long unsigned int)(a))
-#define U64_SCANF_ARG(a) ((long long unsigned int*)(a))
-#define U64_LITERAL(n) (n ## llu)
-#define I64_PRINTF_ARG(a) ((long long signed int)(a))
-#define I64_SCANF_ARG(a) ((long long signed int*)(a))
-#define I64_LITERAL(n) (n ## ll)
-#endif /* defined(_MSC_VER) */
-
 #if defined(__MINGW32__) || defined(__MINGW64__)
 #define MINGW_ANY
 #endif
 
-#if defined(_MSC_VER) || defined(MINGW_ANY)
-/** The formatting string used to put a uint64_t value in a printf() or
- * scanf() function.  See also U64_PRINTF_ARG and U64_SCANF_ARG. */
-#define U64_FORMAT "%I64u"
-#define I64_FORMAT "%I64d"
-#else /* !(defined(_MSC_VER) || defined(MINGW_ANY)) */
-#define U64_FORMAT "%llu"
-#define I64_FORMAT "%lld"
-#endif /* defined(_MSC_VER) || defined(MINGW_ANY) */
-
-#if (SIZEOF_INTPTR_T == SIZEOF_INT)
-#define INTPTR_T_FORMAT "%d"
-#define INTPTR_PRINTF_ARG(x) ((int)(x))
-#elif (SIZEOF_INTPTR_T == SIZEOF_LONG)
-#define INTPTR_T_FORMAT "%ld"
-#define INTPTR_PRINTF_ARG(x) ((long)(x))
-#elif (SIZEOF_INTPTR_T == 8)
-#define INTPTR_T_FORMAT I64_FORMAT
-#define INTPTR_PRINTF_ARG(x) I64_PRINTF_ARG(x)
-#else
-#error Unknown: SIZEOF_INTPTR_T
-#endif /* (SIZEOF_INTPTR_T == SIZEOF_INT) || ... */
+#define U64_PRINTF_ARG(a) ((uint64_t)a)
+#define U64_SCANF_ARG(a) (a)
+#define U64_LITERAL(n) UINT64_C(n)
+#define I64_PRINTF_ARG(a) ((int64_t)a)
+#define I64_SCANF_ARG(a) (a)
+#define I64_LITERAL(n) INT64_C(n)
+#define U64_FORMAT "%"PRIu64
+#define I64_FORMAT "%"PRId64
+#define INTPTR_T_FORMAT "%"PRIuPTR
 
 /** Macro: yield a pointer to the field at position <b>off</b> within the
  * structure <b>st</b>.  Example:

src/lib/cc/torint.h

@@ -19,189 +19,16 @@
 
 #include "orconfig.h"
 
-#ifdef HAVE_STDINT_H
 #include <stdint.h>
-#endif
+#include <stdbool.h>
+#include <limits.h>
+
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
-#ifdef HAVE_LIMITS_H
-#include <limits.h>
-#endif
 #ifdef HAVE_SYS_LIMITS_H
 #include <sys/limits.h>
 #endif
-#ifdef HAVE_MACHINE_LIMITS_H
-#if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__)
-  /* FreeBSD has a bug where it complains that this file is obsolete,
-     and I should migrate to using sys/limits. It complains even when
-     I include both.
-     __FreeBSD_kernel__ is defined by Debian GNU/kFreeBSD which
-      does the same thing (but doesn't defined __FreeBSD__).
-     */
-#include <machine/limits.h>
-#endif /* !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) */
-#endif /* defined(HAVE_MACHINE_LIMITS_H) */
-#ifdef HAVE_INTTYPES_H
-#include <inttypes.h>
-#endif
-
-#include <stdbool.h>
-
-#if (SIZEOF_INT8_T != 0)
-#define HAVE_INT8_T
-#endif
-#if (SIZEOF_INT16_T != 0)
-#define HAVE_INT16_T
-#endif
-#if (SIZEOF_INT32_T != 0)
-#define HAVE_INT32_T
-#endif
-#if (SIZEOF_INT64_T != 0)
-#define HAVE_INT64_T
-#endif
-#if (SIZEOF_UINT8_T != 0)
-#define HAVE_UINT8_T
-#endif
-#if (SIZEOF_UINT16_T != 0)
-#define HAVE_UINT16_T
-#endif
-#if (SIZEOF_UINT32_T != 0)
-#define HAVE_UINT32_T
-#endif
-#if (SIZEOF_UINT64_T != 0)
-#define HAVE_UINT64_T
-#endif
-#if (SIZEOF_INTPTR_T != 0)
-#define HAVE_INTPTR_T
-#endif
-#if (SIZEOF_UINTPTR_T != 0)
-#define HAVE_UINTPTR_T
-#endif
-
-#if (SIZEOF_CHAR == 1)
-#ifndef HAVE_INT8_T
-typedef signed char int8_t;
-#define HAVE_INT8_T
-#endif
-#ifndef HAVE_UINT8_T
-typedef unsigned char uint8_t;
-#define HAVE_UINT8_T
-#endif
-#endif /* (SIZEOF_CHAR == 1) */
-
-#if (SIZEOF_SHORT == 2)
-#ifndef HAVE_INT16_T
-typedef signed short int16_t;
-#define HAVE_INT16_T
-#endif
-#ifndef HAVE_UINT16_T
-typedef unsigned short uint16_t;
-#define HAVE_UINT16_T
-#endif
-#endif /* (SIZEOF_SHORT == 2) */
-
-#if (SIZEOF_INT == 2)
-#ifndef HAVE_INT16_T
-typedef signed int int16_t;
-#define HAVE_INT16_T
-#endif
-#ifndef HAVE_UINT16_T
-typedef unsigned int uint16_t;
-#define HAVE_UINT16_T
-#endif
-#elif (SIZEOF_INT == 4)
-#ifndef HAVE_INT32_T
-typedef signed int int32_t;
-#define HAVE_INT32_T
-#endif
-#ifndef HAVE_UINT32_T
-typedef unsigned int uint32_t;
-#define HAVE_UINT32_T
-#endif
-#ifndef UINT16_MAX
-#define UINT16_MAX 0xffffu
-#endif
-#ifndef INT16_MAX
-#define INT16_MAX 0x7fff
-#endif
-#ifndef INT16_MIN
-#define INT16_MIN (-INT16_MAX-1)
-#endif
-#ifndef UINT32_MAX
-#define UINT32_MAX 0xffffffffu
-#endif
-#ifndef INT32_MAX
-#define INT32_MAX 0x7fffffff
-#endif
-#ifndef INT32_MIN
-#define INT32_MIN (-2147483647-1)
-#endif
-#endif /* (SIZEOF_INT == 2) || ... */
-
-#if (SIZEOF_LONG == 4)
-#ifndef HAVE_INT32_T
-typedef signed long int32_t;
-#define HAVE_INT32_T
-#endif
-#ifndef HAVE_UINT32_T
-typedef unsigned long uint32_t;
-#define HAVE_UINT32_T
-#ifndef UINT32_MAX
-#define UINT32_MAX 0xfffffffful
-#endif
-#endif /* !defined(HAVE_UINT32_T) */
-#elif (SIZEOF_LONG == 8)
-#ifndef HAVE_INT64_T
-typedef signed long int64_t;
-#define HAVE_INT64_T
-#endif
-#ifndef HAVE_UINT32_T
-typedef unsigned long uint64_t;
-#define HAVE_UINT32_T
-#endif
-#ifndef UINT64_MAX
-#define UINT64_MAX 0xfffffffffffffffful
-#endif
-#endif /* (SIZEOF_LONG == 4) || ... */
-
-#if (SIZEOF_LONG_LONG == 8)
-#ifndef HAVE_INT64_T
-typedef signed long long int64_t;
-#define HAVE_INT64_T
-#endif
-#ifndef HAVE_UINT64_T
-typedef unsigned long long uint64_t;
-#define HAVE_UINT64_T
-#endif
-#ifndef UINT64_MAX
-#define UINT64_MAX 0xffffffffffffffffull
-#endif
-#ifndef INT64_MAX
-#define INT64_MAX 0x7fffffffffffffffll
-#endif
-#endif /* (SIZEOF_LONG_LONG == 8) */
-
-#if (SIZEOF___INT64 == 8)
-#ifndef HAVE_INT64_T
-typedef signed __int64 int64_t;
-#define HAVE_INT64_T
-#endif
-#ifndef HAVE_UINT64_T
-typedef unsigned __int64 uint64_t;
-#define HAVE_UINT64_T
-#endif
-#ifndef UINT64_MAX
-#define UINT64_MAX 0xffffffffffffffffui64
-#endif
-#ifndef INT64_MAX
-#define INT64_MAX 0x7fffffffffffffffi64
-#endif
-#endif /* (SIZEOF___INT64 == 8) */
-
-#ifndef INT64_MIN
-#define INT64_MIN ((- INT64_MAX) - 1)
-#endif
 
 #ifndef SIZE_MAX
 #if SIZEOF_SIZE_T == 8
@@ -223,100 +50,12 @@ typedef int32_t ssize_t;
 #endif /* SIZEOF_SIZE_T == 8 || ... */
 #endif /* !defined(HAVE_SSIZE_T) */
 
-#if (SIZEOF_VOID_P > 4 && SIZEOF_VOID_P <= 8)
-#ifndef HAVE_INTPTR_T
-typedef int64_t intptr_t;
-#define SIZEOF_INTPTR_T 8
-#endif
-#ifndef HAVE_UINTPTR_T
-typedef uint64_t uintptr_t;
-#define SIZEOF_UINTPTR_T 8
-#endif
-#elif (SIZEOF_VOID_P > 2 && SIZEOF_VOID_P <= 4)
-#ifndef HAVE_INTPTR_T
-typedef int32_t intptr_t;
-#define SIZEOF_INTPTR_T 4
-#endif
-#ifndef HAVE_UINTPTR_T
-typedef uint32_t uintptr_t;
-#define SIZEOF_UINTPTR_T 4
-#endif
-#else
-#error "void * is either >8 bytes or <= 2.  In either case, I am confused."
-#endif /* (SIZEOF_VOID_P > 4 && SIZEOF_VOID_P <= 8) || ... */
-
-#ifndef HAVE_INT8_T
-#error "Missing type int8_t"
-#endif
-#ifndef HAVE_UINT8_T
-#error "Missing type uint8_t"
-#endif
-#ifndef HAVE_INT16_T
-#error "Missing type int16_t"
-#endif
-#ifndef HAVE_UINT16_T
-#error "Missing type uint16_t"
-#endif
-#ifndef HAVE_INT32_T
-#error "Missing type int32_t"
-#endif
-#ifndef HAVE_UINT32_T
-#error "Missing type uint32_t"
-#endif
-#ifndef HAVE_INT64_T
-#error "Missing type int64_t"
-#endif
-#ifndef HAVE_UINT64_T
-#error "Missing type uint64_t"
-#endif
-
 /* This assumes a sane (2's-complement) representation.  But if you
  * aren't 2's complement, and you don't define LONG_MAX, then you're so
  * bizarre that I want nothing to do with you. */
 #ifndef USING_TWOS_COMPLEMENT
 #error "Seems that your platform doesn't use 2's complement arithmetic. Argh."
 #endif
-#ifndef LONG_MAX
-#if (SIZEOF_LONG == 4)
-#define LONG_MAX 0x7fffffffL
-#elif (SIZEOF_LONG == 8)
-#define LONG_MAX 0x7fffffffffffffffL
-#else
-#error "Can't define LONG_MAX"
-#endif /* (SIZEOF_LONG == 4) || ... */
-#endif /* !defined(LONG_MAX) */
-
-#ifndef INT_MAX
-#if (SIZEOF_INT == 4)
-#define INT_MAX 0x7fffffffL
-#elif (SIZEOF_INT == 8)
-#define INT_MAX 0x7fffffffffffffffL
-#else
-#error "Can't define INT_MAX"
-#endif /* (SIZEOF_INT == 4) || ... */
-#endif /* !defined(INT_MAX) */
-
-#ifndef UINT_MAX
-#if (SIZEOF_INT == 2)
-#define UINT_MAX 0xffffu
-#elif (SIZEOF_INT == 4)
-#define UINT_MAX 0xffffffffu
-#elif (SIZEOF_INT == 8)
-#define UINT_MAX 0xffffffffffffffffu
-#else
-#error "Can't define UINT_MAX"
-#endif /* (SIZEOF_INT == 2) || ... */
-#endif /* !defined(UINT_MAX) */
-
-#ifndef SHORT_MAX
-#if (SIZEOF_SHORT == 2)
-#define SHORT_MAX 0x7fff
-#elif (SIZEOF_SHORT == 4)
-#define SHORT_MAX 0x7fffffff
-#else
-#error "Can't define SHORT_MAX"
-#endif /* (SIZEOF_SHORT == 2) || ... */
-#endif /* !defined(SHORT_MAX) */
 
 #ifndef TIME_MAX
 
@@ -356,6 +95,10 @@ typedef uint32_t uintptr_t;
 #endif /* (SIZEOF_SIZE_T == 4) || ... */
 #endif /* !defined(SIZE_MAX) */
 
+#ifndef SHORT_MAX
+#define SHORT_MAX SHRT_MAX
+#endif
+
 #ifdef _WIN32
 #  ifdef _WIN64
 #    define TOR_PRIuSZ PRIu64